[puchedev]

The app can now reach a Windows PC running the Herdr desktop app's herdr-core, over OpenSSH Server with Git for Windows' Bash as its shell. herdr-push pair also runs there, so a Windows PC is paired with the QR code like any other machine.

What changes

• HcDetection: the probe recognises Git Bash (uname -s is MINGW*, MSYS* or CYGWIN*), asks hc server status (there is no socket path to read on Windows) and talks to herdr-core with hc connect. Linux and macOS take the same path as before.
• herdr-push pair on Windows: reads the host keys and sshd_config in C:\ProgramData\ssh; for a user in Administrators, while the stock Match Group administrators block is there, writes to administrators_authorized_keys (which needs a terminal opened as administrator); writes the one-time key's command with forward-slash paths for Bash; locks with msvcrt where there is no fcntl; finds Tailscale's CLI in %ProgramFiles%\Tailscale when sshd's PATH predates its install. herdr-push goes to version 12; on Windows only pair runs in this change.
• README ("A Windows machine") and the pairing screen: the one-time setup (DefaultShell) and that the interpreter there is usually python.

Checks

• ./gradlew -p core test: 609 tests. I ran them on Windows, where 52 tests already fail on main (Java's quoting of sh -c, the Microsoft Store's python3); the same ones fail here and no others; DictationTest's timing test failed once under load and passes on its own. Linux CI is the real check. New cases in HerdrCoreTest run the real probe script with a fake uname and a fake core.
• ./gradlew :app:testDebugUnitTest: 93 tests; the 13 that fail on main on Windows (file renames, RoutesTest) fail here too, no others.
• By hand on Windows 11 (OpenSSH 9.5, Git Bash, herdr-core 0.1.18) with a phone: paired with the QR code (LAN and Tailscale addresses), Agents, Terminal and the task list work.

Shots

Dark; light ones beside them in docs/screenshots/windows-machines/ on the pr-shots/windows branch of my fork.

before: add-machine	after: add-machine

Part of a series that makes a Windows PC a full herdr machine. Chat (#113), health (#114) and notifications (#115, stacked on this one) on Windows need it to reach the PC; the Python lookup (#110), search (#111) and the brief (#112) with herdr-core alone, and a port-forward crash (#109) stand on their own.

🤖 Generated with Claude Code

[makefunstuff]

Merged through #117, thank you @puchedev! The app can now reach a Windows PC's herdr-core over Git Bash, and herdr-push pair works there too, including the administrators' keys file. One test still expected herdr-push version 11, so I fixed that on our side and kept you as co-author of the commit.